Space: Readjusting to Gravity

The prime objective of the Skylab 2 mission was to test how well humans
can live and work in space. But Astronauts Al Bean, Jack Lousma and
Owen Garriott also had another important goal: observing the earth.
Last week, as scientists began assessing the results of the
record-breaking journey (during which Skylab 2 circled the earth 859
times in more than 59 days), NASA released some of the astronauts'
photographic handiwork. The stunning earth pictures ranged from such
geological phenomena as craters on snow-capped volcanoes to sweeping
views of Hurricane Ellen to an...